Photographic machine



July 8, 1924.

M. L. COSSITT PHOTOGRAPHIC MACHINE Filed Jan. 26. 1920 v[ln e/wfmr 29fllnuomLCosslrr By flan! Aty.

Patented July 8, 1924.

UNITED STATES 1,500,312 PATENT OFFICE.

MALCOLM L. COSSITT, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO KAmOIrDIMPRESSIONS COI IIYOBATION, OF CARSON CITY, A. CORPORATION 01 I NEVADA.

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Application filed January 2 8, 1920. Serial No. 354,211.

To all whom it may concern:

Be it known that I, MALCOLM L. Cossrrr, a citizen of the United States,and a resident of the city and county of. San Francisco, State ofCalifornia, have made a new 7 ployed in printing large quantities ofprints from a single negatlve.

Another object of this invention is to produce a machine which can beoperated by an unskilled person, and one which will produce uniformresults.

Another object is to produce a machine which may be cheaply andeconomically manufactured and operated, and at the same time be withinthe purchasing limits of the ordinary commercial photographer.

Other objects and advantages will be seen as the description proceeds.

In this specification and the annexed drawings, the invention isillustrated 1n the form considered to be the best, but 1t 1s to beunderstood that the invention 1s not limited to such form, because itmay be embodied in other forms, and it is also to be understood that inand by the claims following the description it is deslred to cover theinvention in whatsoever form it may be embodied.

In the drawings Figure 1 is a side elevation of my complete machine.

Figure 2 is a cross section in elevation of Figure 1.

Figure 3 is a perspective view of the shutter and reflector.

Referring to the drawings in detail, the numeral 5 designates a tablehaving a cut away portion 6. This table may be supported by suitablelegs 7. Rollers 8 and 9 are positioned inthe cut away portion 6 of thetable and spaced apart from each other. A third roller 11 is provided ata point below the table, and is suitably supported by a bracket 12. Asupport 13 is attached to the top of the table near its edge for thepurpose of supporting a shaft 14, which shaft supports a drum 16. Thisdrum is formed 1n two halves, one half being formed of frosted glass asat 17 and the other half bemg made of any suitable material which isimpervious to light and is indicated at 18.

A handle 19 is attached to the shaft 14 for the purpose of rotating thesame, and as the drum 16 is attached to said shaft 14 rotation of thehandle 19 will rotate the drum 16.

Referrlng nowto Figure 3, it will be noted that the shaft 14 supports aparabolic reflector 21 which is attached through rods 22 to a collar 23.This collar 23 is free to rotate upon the shaft 14. A collar 23 alsocarries a rod 24 projecting downwardly and attached to one side of ashutter 26. This shutter is curved on its upper edge overlapping thelower edge of the parabolic reflector. A second collar 27 is providedupon the shaft 14 adjacent the collar 23 and carries a rod 28 attachedto a shutter 29. This shutter 29 is similar in construction to theshutter 26. A screw 31 is provided which passes through lugs extendingoutwardly from the rods 24 and 28 for the purpose of moving the shutters26 and 29 toward or away from each other.

It is to be understood that the parabolic reflector and shutters aresupported attheir opposite ends in a similar manner. The parts formingthe shutters are of sufiicient weight to hold the parabolic reflectorabove the shaft. In other words they serve as a counter Weight for thereflector, and thereby prevent its rotation when the shaft 14 isrotated.

Illuminating means, such as electric lights 32, are supported along theshaft 14 in any convenient manner for the purpose of illuminating theinterior and causing light to be reflected from the reflector downwardlythrough the opening between the shutters 26 and 29.

A web belt 33 is provided which passes over the roller 8 under the drum16 over the roller 9 and roller 11. This forms a rolling contact withthe drum 16, and is adapted to travel at the same rate as that of theperiphery of the drum.

Suitable fastening means 34 are provided for attaching a film ornegative to the glass half of the drum.

In operation, a film or negative is attached to the drum andphotographic paper is either automatically or manually fed to the thesensitize or away from eacl.

a negative, and it is to machine at the point A, and at a time when thepoint B of the cylinder is ad acent the point A. The result will be thatthe paper and film will be carried from one s1de of the 5 table to theother, and the li ht passing the same may be operated-either manually orautomatically wit out departing from the spirit of the invention. 7

Having thus described my invention what I claim as new and desire tosecure by Letters Patent of the United States is as follows:

1. In a photographic machine, the combination of a support, a drumrotatable on said support, said drum havin a trans arent portion, alight within the rum, as aft within said drum, means for rotating saiddrum, a traveling web approximating said drum, a reflector supported onsaid shaft,

shutters mounted on said shaft and serving to limit the area ofillumination of said drum, and further to prevent rotation of saidreflector on said shaft.

2. In a photographic machine, the combination of a support, a drumrotatable on said support, said drum having a transparent portion, alight within the drum, means for rotating said drum, a traveling webapproximating the drum, a reflector within the m drum, and a shutterwithin the drum arranged relatively to said reflector to cooperatetherewith to limit the area of illumination of said drum.

e understood that nation of a support, a drum rotatable on said support,sai drum having a transparent portion, a light within the drum, meansfor rotating the drum, a traveling web ap roximating the drum, areflector within the rum, a plurality of movable shutter members tolimit the area of illumination of the drum, and means adjustablyconnecting the shutter members together.

5. In a photographlc machine, the combination of a support, a drumrotatable on the support, said drum havin a transparent portion, a lightwithin the rum, means for rotating the drum, a traveling webapproximatin the drum, a pair of shutter members to limit the area ofillumination of the drum, and adjusting means for the shutterscomprising a rod adjustably connecting the shutters together.

6. In a photographic machine, the combination of a support, a drumrotatable on the support, said rum havin a transparent portion, a lightwithin the drum, means for rotating the drum, a traveling webapproximating the drum, and a plurality of swinging shutter members tolimitthe area of illumination of the drum, and adjusting means for saidshutter members.

In tGStlmOIY whereof, I have hereunto set my hand at can Francisco,California, this 12th day of July 1919.

MALCOLM L. COSSITT.

